Standardize usage of virtual/override/final in device/

The Google C++ style guide states:

  Explicitly annotate overrides of virtual functions or virtual
  destructors with an override or (less frequently) final specifier.
  Older (pre-C++11) code will use the virtual keyword as an inferior
  alternative annotation. For clarity, use exactly one of override,
  final, or virtual when declaring an override.

To better conform to these guidelines, the following constructs have
been rewritten:

- if a base class has a virtual destructor, then:
    virtual ~Foo();                   ->  ~Foo() override;
- virtual void Foo() override;        ->  void Foo() override;
- virtual void Foo() override final;  ->  void Foo() final;

This patch was automatically generated. The clang plugin can generate
fixit hints, which are suggested edits when it is 100% sure it knows how
to fix a problem. The hints from the clang plugin were applied to the
source tree using the tool in https://codereview.chromium.org/598073004.

BUG=417463
TBR=keybuk@chromium.org

Review URL: https://codereview.chromium.org/663203007

Cr-Commit-Position: refs/heads/master@{#300790}

1 files changed, 2 insertions, 2 deletions

diff --git a/device/nfc/nfc_tag_technology.h b/device/nfc/nfc_tag_technology.h
index 45b3146..8ada39b 100644
--- a/device/nfc/nfc_tag_technology.h
+++ b/device/nfc/nfc_tag_technology.h
@@ -71,7 +71,7 @@ class NfcNdefTagTechnology : public NfcTagTechnology {
   // The ErrorCallback is used by methods to asynchronously report errors.
   typedef base::Closure ErrorCallback;
 
-  virtual ~NfcNdefTagTechnology();
+  ~NfcNdefTagTechnology() override;
 
   // Interface for observing changes from NFC tags related to NDEF records.
   class Observer {
@@ -93,7 +93,7 @@ class NfcNdefTagTechnology : public NfcTagTechnology {
   virtual void RemoveObserver(Observer* observer) = 0;
 
   // NfcTagTechnology override.
-  virtual bool IsSupportedByTag() const override;
+  bool IsSupportedByTag() const override;
 
   // Returns all NDEF records that were received from the tag in the form of an
   // NDEF message. If the returned NDEF message contains no records, this only